MOLYKOTE® 4 Electrical Insulating Compound | DC-4 - Silicone-Based Dielectric Grease

Dupont

DC4-5-3OZ_EACH

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MOLYKOTE® 4 Electrical Insulating Compound | DC-4

Premium silicone-based compound designed for dielectric strength, electrical insulation, and moisture-proof sealing. Ideal for metal-on-polymer, metal-on-rubber assemblies, and sealed electrical connections.

Key Features and Benefits

  • Excellent Electrical Insulation: High dielectric strength for reliable performance in electrical systems.
  • Wide Temperature Range: Performs effectively from -54°C to 200°C (-65°F to 392°F).
  • Moisture Resistance: Provides superior water repellency and moisture-proof sealing for long-term durability.
  • Versatile Applications: Suitable for use with metals, plastics, elastomers, and ceramics.
  • Certified for Safety: Compliant with AMS8660, NSF 51 and 61, Kosher Pareve, and Halal certifications.
  • Semi-Flowable Consistency: Easily penetrates complex geometries for efficient sealing and lubrication.

Detailed Product Description

MOLYKOTE® 4 Electrical Insulating Compound, also known as DC-4, is a silicone-based compound with a semi-flowable consistency, designed for use as a dielectric sealant and lubricant. It offers high dielectric strength, excellent electrical insulation, and moisture-proof properties, making it ideal for demanding industrial and transportation applications.

This versatile compound adheres to metals, elastomers, and polymers, providing reliable sealing and lubrication in electrical systems such as cable connectors, battery terminals, and rubber seals. Its low volatility and oxidation resistance ensure long-lasting performance, even in harsh environments.

Originally branded as Dow Corning, this product has transitioned to the MOLYKOTE® line under DuPont. Learn more about this rebranding in our detailed blog post.

Applications

  • Moisture-proof seal for ignition systems, electrical connectors, and terminals.
  • Lubricant for cable connectors, switches, and rubber seals.
  • Assembly lubricant for metal-on-plastic and metal-on-rubber combinations.
  • Sealing and lubrication for valves, packings, and O-rings.

Technical Specifications

  • Product Type: MOLYKOTE® Compound
  • Technology: Silicone
  • NLGI Grade: 2-3
  • Thickener: Silica
  • Temperature Range: -54°C to 200°C (-65°F to 392°F)
  • Color: Translucent White
  • Low Temperature: -54°C
  • High Temperature: 200°C

Available Sizes and Part Numbers

Size Packaging Part Number
150 g / 5.3oz Tube 1927574
3.6 kg / 8lb Pail 1954016
18.1 kg / 40lb Pail 1954024
199.5 kg Drum Contact for Availability

Why Choose MOLYKOTE® 4 Electrical Insulating Compound?

  • Reliable electrical insulation with high dielectric strength.
  • Effective moisture resistance and water repellency.
  • Long-lasting performance with excellent thermal oxidation stability.
  • Trusted by industries worldwide for sealing and lubrication applications.

Customer Reviews

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D
David Neiman
MK04--what I needed, prompt delivery

Prompt delivery and good price.


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